Tube-cutter



(No Model.)

Patented Oct. 15, 1889.

WITNESS/5 ATTORNEYS.

N. FEI'ERS. FhoivLilhognpI-m wzihington, D- C.

(No Model.) 2 Sheets- Shut 2:.

' P. H. BENADE.

TUBE CUTTER.

N0. 4.12.944. "Patented 004. 15, 1889.

INVENTOR:

"fi 4 By Wm ATTORNEYS.

UNITED STATES PATENT OFFICE,

PATRICK n. BENADE, or PUNXSUTAWNEY, PENNSYLVANIA.

TU BE-CUTTER.

SPECIFICATION forming part of Letters Patent No. 412,944, dated October 15, 1889.

Application filed December 5,1888. Serial No. 292,692. (No model.)

To all whom it may concern:

Be it known that I, PATRICK H. BENADE, of Punxsutawney, in the county of Jefferson and State of Pennsylvania, have invented a new and useful Improvement in Tube-Cutters, of which the following is a full, clear, and exact description.

This invention relates to that description of boiler-tube cutters or trimmers in which expansion-bars actuated by an adjustable wedge are used to throw a series of cutters radially outward, and in which independentlyrotaiable cutters are used, the feed or adj ustment of the cutters being efiected by a screw carried by and forming part of the rotatable tool.

The invention consists in certain novel constructions and combinations of parts in a tubecutter embracing the above-named features, substantially as hereinafter described, and pointed out in the claim, whereby the cutters, which are peculiarly placed, have the power Very effectually applied to them, and varioussized tubes may readily be cut with the same tool, and as the size of the latter increases so will its capacity to do the work.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a longitudinal view or elevation of a tube-cutter embodying my invention witha removable end guide adapted to fit within the tube to be cut detached. Fig. 2 is a longitudinal section of the same with said end guide attached. Fig. 3 is an outer or back end view of the tool; and Fig. 4., an inner end view, as at the line 92min Fig. 1, a plate for securing or holding the cutters in position and the end guide, above referred to, being removed.

A is the body of the tool, made hollow, as usual, and having two or more-preferably three, as here shown-1ongitudinal openings 1) made in it from its forward end to a suitable distance back to provide for the inand-out movement of the cutters and the bars which carry them, as hereinafter described. The

outer or back end of said body A is con structed with a shouldered recessed portion that has a screw=thread 0 cut in it, within a screw D, provided with a handle E, which serves to feed the cutters against the inside of the tube to be cut. Said screwD also passes through a ring 0', arranged within the shouldered recessed portion of the body A at its inner end, which ring is recessed, as at cl, to carry the cutter-bars G, that correspond in number and arrangement to the longitudinal openings 1) in the body of the tool. This ring 0, which also fits the screw-thread c of the body A,might be in one piece with the nut or box 0 3 but it is made separate from it for the purpose of extending the tool any desired length, the screw 1) being of length to suit.

The cutters H are at the inner ends of the bars G, and are fitted to independently rotate within and through a milled opening 6 at the inner or forward end of each longitudinal slot or opening I), and which opening eis of a shape and size to make its walls fit the cutter on its sides or faces, so as to keep the cutter straight and insure its cutting-edge striking in the same line.

The cutter-bars G havea ball-an d-socket fit within the independently-rotatable cutters H, and are also freely fitted at their back ends within the recess (1 of the ring 0 to insurea free action for the cutters without restraint by the cutter-barsg but both cutter-bars and out ters rotate by their fit through the body A in common with the tool when turned by a wrench applied to the nut or box 0.

Upon the inner end of the screw D is suitably secured a beveled roller 1, which as the screw is worked outward acts upon the inner faces of the cutter bars G to force them and feed the cutters H outward.

On the inner end of the bodyAis secured, as by screws f, a plate J, which serves to hold the cutters in their places. This plate J is provided with a screw-threaded neck g, on which may be screwed a guide K of any suitable exterior diameter to fit snugly within the tube to be cut, said guide forming a solid fixture or appendage to the tool when in place,

but being detachable to provide forits replaceand transverse openings 6, the. screw-box C, ment by guides of different sizes or diameters. and a recessed ring C, of the cutter-bars G, I 5

Upon the exterior of the body A is fitted having their outer ends fitting in the recess of loosely a collar or gage L, against which the the ring, the cutters I-I, connected by a ball- 5 end of the tube to be cut bears, and which may and-socket joint with the inner ends of the be secured in position on or along said body A, bars G, and the screw D, provided with the according to its distance required from the roller I on its end, substantially as herein 1:0

cutters, by a set-screw 71. shown and described. Having thus described my invention what lo I claim as new, and desire to secure by Iietters PATRICK BENADE' Patent, is- Witnesses:

In a tube-cutter, the combination, with a W. M. KIRKPATRICK,

hollow body A, having longitudinal slots b V JAs. I. GBUHLQ 

